package org.song.course.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.song.course.service.CoreService;
import org.song.course.util.SignUtil;

/**
 * 核心请求处理类
 * 
 * @author liufeng
 * @date 2013-05-18
 */
public class CoreServlet extends HttpServlet {
	private static final long serialVersionUID = 4440739483644821986L;

	/**
	 * 确认请求来自微信服务器
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// 微信加密签名
		String signature = request.getParameter("signature");
		// 时间戳
		String timestamp = request.getParameter("timestamp");
		// 随机数
		String nonce = request.getParameter("nonce");
		// 随机字符串
		String echostr = request.getParameter("echostr");

		PrintWriter out = response.getWriter();
		// 通过检验signature对请求进行校验，若校验成功则原样返回echostr，表示接入成功，否则接入失败
		if (SignUtil.checkSignature(signature, timestamp, nonce)) {
			out.print(echostr);
		}
		out.close();
		out = null;
	}

	/**
	 * 处理微信服务器发来的消息
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// 将请求、响应的编码均设置为UTF-8（防止中文乱码）
		request.setCharacterEncoding("UTF-8");
		response.setCharacterEncoding("UTF-8");
//		// 接收参数微信加密签名、 时间戳、随机数
//		String signature = request.getParameter("signature");
//		String timestamp = request.getParameter("timestamp");
//		String nonce = request.getParameter("nonce");
//		String isdebug=request.getParameter("debug");
//		String respXml ="";
		// 请求校验
//		if ((isdebug!=null&&"1".equals(isdebug))||SignUtil.checkSignature(signature, timestamp, nonce)) {
//			// 调用核心服务类接收处理请求
//			String respXml = CoreService.processRequest(request);
////			out.print(respXml);
//		}else
//		{
//			
//		}
		
		
		
		// 调用核心业务类接收消息、处理消息
		String respMessage = CoreService.processRequest(request);
		
		// 响应消息
		PrintWriter out = response.getWriter();
		out.print(respMessage);
		out.close();
	}
	


}

